Gripper and gripper-bar.



No. 759,395, PATENTED MAY 10, 190 1. H. F. RUBEY.

GRIPPER AND GRIPPER BAR.

APPLICATION FILED AUG. 17, 1903.

N0 MODEL.

Patented May 10, 1904.

UNITED STATES PATENT OFFICE.

HERBERT FREELAND RUBEY, OF GLIDDEN, IOIVA.

GRIPPER AND GRlPPER-BAR.

SPECIFICATION forming part of Letters Patent No. 759,395, dated May 10, 1904. Application filed August 17, 1908. Serial No. 169,688. (No model.)

To all whom, it may concern.-

Be it known that I, HERBERT FREELAND RUBEY, a citizen of the United States, residing in Glidden, county of Carroll, and State of Iowa, have invented a new and useful Improvement in Grippers and Gripper-Bars, of which the following is a specification.

The object of my invention is to provide a gripper for a printing-press, simple, strong, durable, and inexpensive in construction, in which the gripper-fingers may be easily and quickly attached to or detached from or adjusted to any point on the gripper-bar.

My invention consists of certain details of construction hereinafter set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which Figure 1 shows a side elevation of my improved gripper. Fig. 2 shows a longitudinal sectional view of one of the end fingers of the gripper. Fig. 3 shows a detail view in section of the base of one of the end fingers of the gripper; and Fig. 4 shows a longitudinal sectional view of the central gripper-finger.

Referring to the accompanying drawings, the reference-numeral 10 is used to indicate the grip-bar, being provided on its upper edge with inwardly-projecting recesses 11, said recesses being evenly spaced and arranged and designed as a rule, the scale being scored on the upper side surface of the bar.

The numerals 12 and 13 indicate shafts mounted on shanks 14 and 15, said shafts being adapted to be received by the platen-ears of the printing-machine.

The reference-numeral 16 indicates one of the end fingers of the gripper, said finger being provided with a channel 17, "extending transversely through its base, said channel being designed to be of a sufiicient size as to permit the gripper-bar 10 to pass through it, and by this means the finger 16 is attached to the bar 10.

Extending downwardly from the upper surface of the channel 17 are projections 18, said projections being of such a shape and such a size as to be adapted to be received by the recess 11 in the bar 10 for the purpose of immovably securing the finger 16 to the bar 10, when a thumb-screw 19, extending upwardly through the base of the finger 16 and into the channel 17 is clamped against the under portion of the bar 10. The other end finger 20 is exactly similar in every respect to the finger 16. Hence it is unnecessary to describe it further.

The reference-numeral 21 indicates the front plate of the middle or central gripper-finger, and this finger is designed to be removable as well as adjustable.

The numeral 22 indicates the back plate, being provided with a shoulder 23, the two plates 21 and 22 being welded or firmly secured together above the shoulder 23, thus obviously leaving an open space 2 1 between the two plates beneath the shoulder 23, the length of said open space being designed to be greater than the width of the gripper-bar 10.

Near the base of each of the plates 21 and 22 is a channel 25, extending transversely therethrough, said channels being designed to receive the ends of a nut 26, provided in its under surface with longitudinal slats 27 and 28, and with a set-screw 29, extending upwardly through its central portion.

The numeral 30 indicates projections extending downwardly from the under surface of the shoulder 23 on the plate 22, said projections being designed to be received by the recesses 11 in the bar 10.

In securing the central finger to the grip per-bar 10 the finger is placed on the bar by means of the open space 2 1, the ends of the plates 21 and 22 extending beneath and one on each side of the bar and the projections 30 fitting in the recesses 11. The nut 26 is then inserted in the openings 25, and the grooves 27 and 28 in the under surface of the nut are then fitted over the edgesin the plates 21 and 22, formed by the under surfaces of the channels 25, and the thumb-screw 29 is then fitted in the nut 26 and clamped against the under surface of the bar 10, thus obviously clamping the nut 26 securely in place. It is equally obvious that the finger may be either adjusted or removed by the same means.

I am aware that adjustable gripper-fingers have been in use for some time; but the particular advantage which I claim for mine over those heretofore used is that there is no point on the bar at which the fingers I employ cannot be secured and that the central finger I employ may be entirely removed from the bar at the will of the operator.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

In a gripper, for a printing-machine, the combination of a gripper-bar graduated to a scale and containing recesses in its upper surface; two gripper-fingers located, one near each end of the gripper-bar, each of said fingers being provided with a transverse channel in its base designed to receive the gripper-bar, downwardly-extending projections,

secured to the upper surface of said channel, designed to be received by the recesses of the bar, a set-screw extending upwardly through upwardly through the central portion of said nut, all arranged and combined substantially as and for the purposes stated.

HERBERT FREELAND RUBEY. Witnesses:

FRANK STEINER, E. REYNOLDS. 

